【英语时差8,16】时间之谜--年、月的由来

（单词翻译）

People saw¹ the sun rise² higher in the sky during³ the summer than in winter. They counted the days that passed from the sun's highest position⁵ until⁶ it returned⁷ to that position. They counted three-hundred sixty-five days. We now know that is the time Earth⁸ takes to move once around the sun. We call this period⁹ of time a year. Early humans¹⁰ also noted¹¹ changes in the moon. As⁴ it moved across¹² the night sky, they must have wondered¹³. Why did¹⁴ it look different every night? Why did it disappear¹⁵? Where did it go? Even¹⁶ before they learned¹⁷ the answers to these questions, they developed¹⁸ a way to use the changing faces of the moon to tell time. The moon was¹⁹ "full" when its face was bright and round. The early humans counted the number of times the sun appeared²⁰ between full moons. They learned that this number always remained²¹ the same -- about twenty-nine suns. Twenty-nine suns equaled one moon. We now know this period of time as one month.